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Cobalt dichloride

CAS 7646-79-9
18

Safety score · 0–100

Avoid

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

About

Cobalt Dichloride is a cosmetic ingredient. Exercise caution due to limited available safety data.

Cobalt dichloride (CAS 7646-79-9) is a cobalt(II) salt that has been used in cosmetic formulations and as a humidity indicator. EU Regulation 1223/2009 Annex III restricts its use to concentrations below 0.1% as a constituent of substances or mixtures. Cobalt and cobalt compounds are known skin sensitizers and respiratory sensitizers. The compound is classified as a suspected carcinogen (H350i - inhalation) and is associated with hard metal lung disease in occupational settings. Cobalt dichloride is effectively restricted in cosmetic products due to the extensive safety concerns.

Known concerns

  • Restricted to <0.1% in EU mixtures
  • Skin and respiratory sensitizer
  • Suspected carcinogen by inhalation (H350i)
  • Cobalt allergy and contact dermatitis
  • Potential for systemic cobalt exposure

References

EU

EU CosIng database

European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.

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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.